The Scientific World Journal / 2012 / Article / Tab 3

Research Article

Deriving Freshwater Quality Criteria for Iron, Lead, Nickel, and Zinc for Protection of Aquatic Life in Malaysia

Table 3

Comparison criteria of metal concentration in freshwater ecosystem.

Fe (μg L−1)Pb (μg L−1)Ni (μg L−1)Zn (μg L−1)

This studyCMC = 37.2CMC = 8.5CMC = 82.5CMC = 152.4
CCC = 9.0CCC = 2.0CCC = 19.9CCC = 36.7
USEPAn.a.CMC = 10.8*CMC = 120*CMC = 30*
CCC = 0.42*CCC = 13.3*CCC = 30*
CCME30012530
UNECE (Class I)n.a.<0.1<15<45
NWQS (Class II)100050505000

Sources: CCME [34]; NWQS [2]; USEPA [32]; UNECE [33].
n.a.—not available.
*For water hardness 20 mg L−1.

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